RETHINKING CRYPTOCURRENCY FROM THE BOTTOM UP
Scrypt was chosen as an encryption algorithm. Other candidates were Blue Midnight Wish, SHA3, and Skein. After much analysis we came to the conclusion that such algorithms make for a nice selling point, but fall short of Scrypt in terms of securing a blockchain. Our aim is to create the best coin possible, not lure you in with gimmicks.
Yeah, I'm so sure that you chose scrypt as the best one over those other ones, as opposed to the fact you have no idea how to implement those others.
And there are no SW miners for new algorithms; Scrypt or SHA256d have huge advantage that these are already supported by mining infrastructure... When YACoin was launched several days ago, it was like an excursion to the bitcoin history; only solo mining was possible and as I know only modified cpuminer is available that is basic miner (no ncurses, no failover, etc).